Pioneer VSX-D638-G User manual

ORDER NO.
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER ELECTRONIC CORPORATION 1999
RRV2154
T – ZZK JUNE 1999 Printed in Japan
CONTENTS
1. CONTRAST OF MISCELLANEOUS PARTS........2
2. SCHEMATIC DIAGRAM .......................................5
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-D638-G
Type Model Power Requirement The voltage can be converted by
VSX-D638-G the following method.
HLXJI ‡AC220-230V AC240V, ∗
LBXJI ‡AC110V –––––––
YPWXJI ‡AC240V –––––––
∗:Alter the wiring of the Power-supply block at the primary winding of Power-transformer referring to the "Line Voltage Selection" described
in Service Manual.
Model Order No. Remarks
VSX-808RDS/HYXJI RRV2115
¶This service manual should be used together with the following manual(s):

VSX-D638-G
2
1. CONTRAST OF MISCELLANEOUS PARTS
Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
The mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
Screws adjacent to mark on product are used for disassembly.
Reference Nos. indicate the pages and Nos. in the service manual for the base model.
NOTES:
When ordering resistors, first convert resistance values into code form as shown in the following examples.
Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%,
and K=10%).
Ex.2 When there are 3 effective digits (such as in high precision metal film resistors).
561
473
R50
1R0
5621
560
47k
0.5
1
RD1/4PU J
RD1/4PU J
RN2H K
RS1P K
56 x 101
47 x103
R50
1R0
561
473
5.62k RN1/4PC F562 x 1015621
CONTRAST TABLE
Part No.
Ref. No. Mark Symbol and Description VSX-808RDS VSX-D638-G VSX-D638-G VSX-D638-G Remarks
/HYXJI /HLXJI /LBXJI /YPWXJI
ASSEMBLIES
INPUTASSY AWK7474 AWK7475 AWK7475 AWK7475
P5- 1 INPUTASSY AWX7210 AWX7365 AWX7365 AWX7365
P5- 2 FRONT ASSY AWX7217 AWX7218 AWX7218 AWX7218
AMPASSY AWK7482 AWK7482 AWK7507 AWK7506
P5- 5 AMPASSY AWX7226 AWX7226 AWX7370 AWX7226
P5- 7 TRANS 1 ASSY AWX7287 AWX7287 AWX7287 AWX7369
PACKING SECTION
P3- 3 Operating Instructions (English) ARB7158 ARB7160 ARB7160 ARB7160
P3- 5 FM Antenna ADH7005 ADH7005 ADH7004 ADH7005
P3- 7 NSP Warranty Card ARY7022 Not used Not used ARY7027
P3- 8 Remote Control Unit (CU-VSX140) AXD7181 Not used Not used Not used
P3- 8 Remote Control Unit (CU-VSX138) Not used AXD7178 AXD7178 AXD7178
P3-13 Packing Case AHD7695 AHD7696 AHD7697 AHD7697
P3-14 Operating Instructions (German) ARC7203 Not used Not used Not used
P3-15 Operating Instructions (French/Italian) ARC7204 Not used Not used Not used
P3-16 Operating Instructions (Swedish/Dutch) ARC7205 Not used Not used Not used
P3-17 Operating Instructions ARC7206 Not used Not used Not used
(Portuguese/Spanish)
Operating Instructions (Chinese) Not used ARC7256 ARC7256 Not used
EXTERIOR SECTION
P5-18 Power Transformer (T1) ATS7242 Not used Not used ATS7242
(AC220-230V/240V)
P5-18 Power Transformer (T1) (AC220-230V) Not used ATS7243 Not used Not used
P5-18 Power Transformer (T1) (AC110V) Not used Not used ATS7244 Not used
P5-19 Fuse (FU1 : T2.5A) REK-104 REK-104 Not used REK-104
P5-19 Fuse (FU1 : T5A) Not used Not used AEK1061 Not used
P5-26 AC Power Cord VDG1061 VDG1061 VDG1058 VDG1065
P5-29 Tuner Holder AAD7490 AAD7492 AAD7492 AAD7492
VSX-D638-G/HLXJI, LBXJI, YPWXJI and VSX-808RDS/HYXJI are constructed the same except for the following :

VSX-D638-G
3
Notes : ÷For ASSEMBLIES, refer to “CONTRAST OF PCB ASSEMBLIES” and “2. SCHEMATIC DIAGRAM”.
Part No.
Ref. No. Mark Symbol and Description VSX-808RDS VSX-D638-G VSX-D638-G VSX-D638-G Remarks
/HYXJI /HLXJI /LBXJI /YPWXJI
P5-31 Rear Panel ANC7723 ANC7765 ANC7768 ANC7766
P5-32 Bonnet Case AZN7771 AZN7823 AZN7823 AZN7823
P5-41 Volume Knob AAB7179 AAB7180 AAB7180 AAB7180
P5-43 Function Button AAD7500 AAD7487 AAD7487 AAD7487
P5-44 Power Button AAD7440 AAD7485 AAD7485 AAD7485
P5-45 Power Button M AAD7442 AAD7491 AAD7491 AAD7491
P5-46 Display Window AAK7612 AAK7649 AAK7649 AAK7649
P5-47 Front Panel AMB7561 AMB7580 AMB7580 AMB7580
P5-49 Name Plate PAM1776 PAM1779 PAM1779 PAM1779
P5-52 Screw ABA7017 Not used Not used Not used
P5-55 Screw RBA1099 ABA7044 ABA7044 ABA7044
P5-57 Screw (×3, For Front Panel) BBZ30P080FZK BBZ30P080FCC BBZ30P080FCC BBZ30P080FCC
P5-57 Screw (×5, For Bonnet Case) BBZ30P080FZK BBZ30P080FCC BBZ30P080FCC BBZ30P080FCC
P5-60 Screw FBT40P080FZK FBT40P080FNI FBT40P080FNI FBT40P080FNI
P5-67 FM/AM TUNER Unit AXX7048 AXX7048 AXX7047 AXX7048
P5-72 Screw BBT30P100FCC ABA1007 ABA1007 ABA1007
P5-74 Push Rivet AEC7025 AEC7205 AEC7205 AEC7205
P5-75 Top Cover AME7375 AME7376 AME7376 AME7376
P5-76 NSP Shrink Shield 140 PDM1021 Not used Not used Not used
P5-77 Cord Clamper RNH-184 Not used Not used Not used
Part No.
Ref. No. Mark Symbol and Description AXD7181 AXD7178 Remarks
(CU-VSX140) (CU-VSX138)
P53- 2 Name Plate AZA7317 AZA7304
P53-12 Main Key (FF) AZN7751 AZN7666
P53-14 Main Key (REV) AZN7752 AZN7665
CONTRAST OF REMOTE CONTROL UNIT
AXD7178 and AXD7181 are constructed the same except for the following :
AWX7370 and AWX7226 are constructed the same except for the following :
AMP ASSY
F
D
Mark Symbol and Description Part No. Remarks
AWX7226 AWX7370
C413, C414, C463, C464 CEAT100M50 CEAT1R0M50
C711, C712 CQMA103K2E ACG1005 (0.01µF/AC250V)
L701 ATF-151 ATF7018
T701 ATT7037 ATT1193
CONTRAST OF PCB ASSEMBLIES
AWX7369 and AWX7287 are constructed the same except for the following :
TRANS 1 ASSY
F
K
Mark Symbol and Description Part No. Remarks
AWX7287 AWX7369
J52 LEAD WIRE UNIT DB135NB0 Not used
J53 LEAD WIRE UNIT (For J52) Not used DB135NB0

VSX-D638-G
4
AWX7218 and AWX7217 are constructed the same except for the following :
FRONT ASSY
F
B
Mark Symbol and Description Part No. Remarks
AWX7217 AWX7218
IC281 BU1923 Not used
Q281 KRC101M Not used
Q282 2SA1515 Not used
Q283 2SC1740S Not used
D222 Not used 1SS355
L281 LFA2R2J Not used
C281, C282 CCSQCH270J50 Not used
C283, C287 CEAT101M10 Not used
C284, C285 CKSQYB102K50 Not used
C286 CKSQYB561K50 Not used
C288 CEAT2R2M50 Not used
C289 CKSQYB472K50 Not used
C290 CEAT1R0M50 Not used
R231–R233 Not used RS1/10S0R0J
R284 RS1/10S333J Not used
R285 RS1/10S104J Not used
R286 RS1/10S473J Not used
R287 RS1/10S222J Not used
R288–R290 RS1/10S102J Not used
S232, S236 ASG1034 Not used
X281 CRYSTAL RESONATOR (4.332MHz) ASS7004 Not used
AWX7365 and AWX7210 are constructed the same except for the following :
INPUT ASSY
F
A
Mark Symbol and Description Part No. Remarks
AWX7210 AWX7365
Q105 Not used KRA101M
Q106 Not used KRC103M
Q107 2SC1740S Not used
C144 ACH7112 (3300µF/35V) CEAT332M35
C145 ACH7113 (2200µF/35V) CEAT222M35
C146 ACH7111 (3300µF/16V) CEAT332M16
C152 CKSQYB103K50 Not used
C304, C326, C327, C348, C349 CEBA1R0M50 CEAT1R0M50
C306, C328, C329, C1300, C1301 CECA100M50 CEAT100M50
C308, C330, C331, C1302, C1303 CECA1R0M50 CEAT1R0M50
C320, C342, C343, C1314, C1315 ACH7110 (47µF/25V) CEAT470M25
R137 RS1/10S101J Not used
R138 RS1/10S221J Not used
R139 RS1/10S472J Not used

VSX-D638-G
5
A
B
C
D
1234
1234
2. SCHEMATIC DIAGRAM
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST"
2.1 INPUT ASSY
CN202
B
406
1/2
D
2/2
A
TO FM/AM
TUNER UNIT
1/2 F
INPUT ASSY(1/2)
(AWX7365)
A
1/2F
A

VSX-D638-G
6
A
B
C
D
1234
1234
F
B
2.2 FRONT ASSY
F
FRONT ASSY
(AWX7218)
B